A multi-water pump integrated module, cooling system and electric drive loader

Abstract

The application discloses a multi-water-pump integrated module, a cooling system and an electrically-driven loader, which comprises a plurality of water pumps, a plurality of water distributors and a water pump box body; the bottom of the water pump box body is provided with a water pump A, a water pump B and a water distributor A, the upper portion of the water pump box body is provided with a water pump C, a water pump D and a water distributor B, the water inlets of the water pumps are aligned with the water outlets of the water distributors, and the water inlets and the water outlets are connected by pipelines; the water inlet one A of the water distributor A and the water outlet of a radiator A are located on the same side, the water outlet three A of the water distributor A and the water inlet of the radiator A are located on the same side, the water inlet one B of the water distributor B and the water outlet of a radiator B are located on the same side, and the water inlet two B of the water distributor B and the water outlet of a radiator C are located on the same side. The multi-water-pump integrated module solves the heat dissipation problems of the motors and the converters of the existing electrically-driven loader, effectively utilizes the internal space of the vehicle frame, and solves the problems of pipeline wiring difficulties.

Description

Technical Field

[0001] This invention relates to a multi-pump integrated module, a cooling system, and an electric-driven loader, belonging to the field of engineering machinery technology. Background Technology

[0002] Traditional hydraulically driven vehicles powered by fuel suffer from low energy conversion efficiency, slow power output response, and high maintenance costs and time-consuming procedures for torque converters, transmissions, and drive axles. With the electrification of the vehicle industry, construction machinery products such as loaders are gradually shifting from fuel-powered to new energy-powered systems. Global construction machinery manufacturers are developing new energy loader products, such as hybrid loaders using engines and energy storage batteries, and pure electric loaders using only energy storage batteries. These are all products driven by electric motors for walking or hydraulic components; therefore, high-voltage control modules such as converters or multi-function controllers have become standard equipment on electric drive loaders.

[0003] The generator, motor, and high-voltage control module of an electric loader all generate a lot of heat during operation. To solve the heat dissipation problem of these components, it is necessary to consider the distribution of heat dissipation flow, the overall vehicle space layout, and pipeline wiring. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a multi-pump integrated module, a cooling system, and an electric drive loader, solving the problems of heat dissipation and flow distribution of the heating elements in existing electric drive loaders, and providing a solution to problems such as insufficient interior space and difficulties in pipeline wiring.

[0005] To achieve the above objectives, the present invention employs a multi-pump integrated module, which includes multiple water pumps, multiple water distributors, and a water pump housing.

[0006] The bottom of the water pump housing is equipped with water pump A, water pump B and water distributor A, and the upper part of the water pump housing is equipped with water pump C, water pump D and water distributor B. The inlet of each water pump is aligned with the outlet of the water distributor and they are connected by a pipeline.

[0007] The inlet A of the water distributor A is on the same side as the outlet of the radiator A, the outlet A of the water distributor A is on the same side as the inlet of the radiator A, the inlet B of the water distributor B is on the same side as the outlet of the radiator B, and the inlet B of the water distributor B is on the same side as the outlet of the radiator C.

[0008] As one embodiment, the water distributor A is made of steel plate A and rectangular tube A welded together to form two closed cavities. The outer side of the rectangular tube A is provided with a round hole for welding hose joints. The outer side of the water distributor A is also welded with a mounting plate A, which is provided with mounting holes.

[0009] The water distributor B is composed of a steel plate B, a partition plate, and a rectangular tube B welded together to form two closed cavities. The outer side of the rectangular tube B has a round hole for welding hose joints. An installation plate B with installation holes is also welded to the outer side of the water distributor B.

[0010] As one embodiment, both water distributor A and water distributor B are provided with a water inlet and a water outlet;

[0011] The water inlet A of the water distributor A is located at the top, and the first outlet A and the second outlet A are located at the bottom. The first outlet B and the second outlet B of the water distributor B are both located at the top, and the first outlet B and the second outlet B are located on the side.

[0012] As one embodiment, the water pump housing is assembled by welding together a front bending plate, a rear bending plate, a vertical support plate, a flat mounting plate, and a mounting base plate; the front bending plate is provided with through holes for water pipes and water pump wires, the rear bending plate is provided with mounting holes for a water distributor and holes for passing through the water inlet of the water distributor, and the rear bending plate is provided with maintenance holes.

[0013] In addition, the present invention also provides a cooling system, including the aforementioned multi-pump integrated module, radiator A, radiator B, radiator C, water tank, front axle motor, rear axle motor, generator and converter, and connecting pipelines.

[0014] The outlet of radiator A is connected to the inlet A of distributor A, and the inlet of radiator A is connected to the outlet A of distributor A. The inlet of water pump A is connected to the outlet A of distributor A, and the outlet of water pump A is connected to the inlet of the front axle motor. The outlet of the front axle motor is connected to the inlet A of distributor A. The inlet of water pump B is connected to the outlet A of distributor A, and the outlet of water pump B is connected to the inlet of the rear axle motor. The outlet of the rear axle motor is connected to the inlet A of distributor A. An electromagnetic water valve is connected between the outlet of water pump B and the outlet of water pump A.

[0015] The outlet of radiator B is connected to the inlet B of distributor B, and the inlet of radiator B is connected to the outlet of generator; the inlet of water pump C is connected to the outlet B of distributor B, and the outlet of water pump C is connected to the inlet of generator; the outlet of radiator C is connected to the inlet B of distributor B, and the inlet of radiator C is connected to the outlet of converter; the inlet of water pump D is connected to the outlet B of distributor B, and the outlet of water pump D is connected to the inlet of converter.

[0016] As one embodiment, the front axle motor includes a left front axle motor and a right front axle motor, both of which are fixed on the vehicle frame. The water inlets of the two motors are located below the motors, and the water channels of the left front axle motor and the right front axle motor are connected in series.

[0017] The rear axle motor is the same model as the front axle motor and can swing up and down with the motor mounting bracket; the generator is located in the middle of the vehicle and is driven by the fuel engine to generate alternating current. The electrical energy is rectified and inverted by the converter to transmit the power to the front axle motor and the rear axle motor.

[0018] The multi-pump integrated module is located in front of the radiator; the water supply tank is located above the multi-pump integrated module and the radiator, and extends beyond the water level chambers of any of the components of the front axle motor, rear axle motor, generator, and converter.

[0019] As one embodiment, the bottom of the water tank is provided with a water inlet, which is connected to water inlet A on water distributor A, water inlet B on water distributor B, and water inlet B on water distributor B. The upper part of the water tank is provided with a degassing port, which is connected to the degassing ports of radiator A, radiator B, and radiator C.

[0020] Finally, the present invention also provides an electric drive loader, wherein the electric drive loader is equipped with the cooling system or the multi-pump integrated module.

[0021] Compared with the prior art, the multi-pump integrated module of the present invention has all pumps and distributors centrally arranged, with the distributor inlet and radiator inlet aligned. All circulating water is supplied to the heating elements through the multi-pump integrated module. At the same time, the pumps controlled by a single controller can achieve reasonable flow distribution, solving the heat dissipation problems of existing electric drive loader motors and inverters, while effectively utilizing the internal space of the vehicle frame. The present invention provides a cooling system layout structure that solves problems such as difficult pipeline wiring. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the multi-pump integrated module and cooling system of the present invention;

[0023] Figure 2 This is a schematic diagram of the cooling system layout of the present invention;

[0024] Figure 3 This is a front axonometric view of the multi-pump integrated module of the present invention;

[0025] Figure 4 This is a rear axonometric view of the multi-pump integrated module of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the water distributor A of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the water distributor B of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the water pump housing of the present invention;

[0029] Figure 8 This is a schematic diagram of the water replenishment tank of the present invention;

[0030] In the diagram: 1. Water pump A, 2. Water pump B, 3. Water pump C, 4. Water pump D, 5. Water distributor A, 5-1. Steel plate A, 5-2. Rectangular tube A, 5-3. Mounting plate A, 5-4. Inlet 1 A, 5-5. Water supply port A, 5-6. Outlet 1 A, 5-7. Outlet 2 A, 5-8. Drain 1 A, 5-9. Inlet 2 A, 5-10. Inlet 3 A, 5-11. Drain 2 A, 5-12. Outlet 3 A; 6. Water distributor B, 6-1. Steel plate B, 6-2. Baffle plate, 6-3. Rectangular tube B, 6-4. Water supply port 1 B, 6-5. Water supply port 2 B, 6-6. Inlet 1 B, 6- 7. Inlet 2B, 6-8. Outlet 1B, 6-9. Outlet 2B, 6-10. Drain 1B, 6-11. Drain 2B, 6-12. Mounting plate B; 7. Pump housing, 7-1. Front bending plate, 7-2. Rear bending plate, 7-3. Vertical support plate, 7-4. Flat mounting plate, 7-5. Mounting base plate, 8. Multi-pump integrated module, 9. Front axle motor, 10. Rear axle motor, 11. Generator, 12. Converter, 13. Radiator A, 14. Radiator B, 15. Radiator C, 16. Makeup tank, 16-1. Makeup tank inlet, 16-2. Makeup tank degassing port, 17. Solenoid water valve. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] like Figures 1-8 As shown, an electric drive loader cooling system includes a multi-pump integrated module 8, radiator A13, radiator B14, radiator C15, water tank 16, front axle motor 9, rear axle motor 10, generator 11, converter 12, and connecting pipes.

[0035] The multi-pump integrated module 8 includes pump A1, pump B2, pump C3, pump D4, distributor A5, distributor B6, pump housing 7, and connecting pipelines between the pumps and distributors (not shown in the figure).

[0036] The outlet of radiator A13 is connected to the inlet A5-4 of distributor A5, and the inlet of radiator A13 is connected to the outlet A5-12 of distributor A5; the inlet of water pump A1 is connected to the outlet A5-6 of distributor A5, the outlet of water pump A1 is connected to the inlet of front axle motor 9, and the outlet of front axle motor 9 is connected to the inlet A5-9 of distributor A5; the inlet of water pump B2 is connected to the outlet A5-7 of distributor A5, the outlet of water pump B2 is connected to the inlet of rear axle motor 10, and the outlet of rear axle motor 10 is connected to the inlet A5-10 of distributor A5; an electromagnetic water valve 17 is connected between the outlet of water pump B2 and the outlet of water pump A1.

[0037] The outlet of radiator B14 is connected to the inlet B6-6 of distributor B6, and the inlet of radiator B14 is connected to the outlet of generator 11; the inlet of water pump C3 is connected to the outlet B6-8 of distributor B6, and the outlet of water pump C3 is connected to the inlet of generator 11; the outlet of radiator C15 is connected to the inlet B6-7 of distributor B6, and the inlet of radiator C15 is connected to the outlet of converter 12; the inlet of water pump D4 is connected to the outlet B6-9 of distributor B6, and the outlet of water pump D4 is connected to the inlet of converter 12.

[0038] As an improvement to the embodiment, such as Figure 2 As shown, the front axle motor 9, rear axle motor 10, generator 11 and converter 12 are located in a relatively dispersed position in the whole machine. The front axle motor 9 includes a left front drive motor and a right front drive motor, both of which are fixed on the frame. The water inlets of the two motors are located below the motors, and the water circuits of the left front drive motor and the right front drive motor are connected in series.

[0039] The rear axle motor 10 is the same model as the front axle motor 9 and can swing up and down with the motor mounting bracket. The generator 11 is located in the middle of the vehicle and is driven by the fuel engine to generate alternating current. The electrical energy is rectified and inverted by the converter 12 to transmit the power to the front axle motor 9 and the rear axle motor 10.

[0040] The multi-pump integrated module 8 is located in front of the radiator, and the water inlets connected to the radiator can be connected in a relatively short and smooth manner; the water supply tank 16 is located above the multi-pump integrated module 8 and the radiator, and exceeds the water level chamber of any of the components of the front axle motor 9, rear axle motor 10, generator 11 and converter 12, to prevent the parts of the heat-generating components that need to be cooled from overheating and being damaged.

[0041] The multi-pump integrated module 8 is installed on the frame of the loader. On the one hand, it enables all circulating water circuits to supply heat-generating elements through the multi-pump integrated module 8, solving the heat dissipation problem of existing electric drive loader motors and inverters. On the other hand, it effectively utilizes the internal space of the frame, which is beneficial to the overall machine structure layout, and solves the problem of difficult pipeline wiring.

[0042] It should be noted that the water pumps A1, B2, C3, and D4 described in this invention are all electromagnetic water pumps of the same model. Since the load on the front axle motor 9 of the loader is generally greater than the load on the rear axle motor 10, an electromagnetic water valve 17 is connected between the outlet of water pump B2 and the outlet of water pump A1 to effectively and promptly supplement the water flow from the rear axle motor 10 to the front axle motor 9, thus meeting the greater heat dissipation requirements of the front axle motor. The water pumps A1, B2, C3, D4, and the electromagnetic water valve 17 are controlled by a controller. When the temperature sensor located at the outlet of the heating element detects that the water temperature is higher than the maximum allowable temperature of each heating element, the controller controls the corresponding water pump to increase its speed and water flow. The controller controls the cooling fan, electromagnetic water pumps, and water valves to achieve efficient heat exchange and reasonable flow distribution.

[0043] Further solution: At the same time, when the water pump is running at maximum speed, if the temperature sensor still exceeds the maximum allowable temperature, the controller sends an alarm signal to the whole machine and reduces the engine speed. After the fault is cleared, the alarm is lifted and the engine runs normally.

[0044] As an improvement to the embodiment, such as Figure 3 and Figure 4 As shown, all the pumps and distributors in the multi-pump integrated module 8 are centrally arranged. Pumps A1, B2 and distributor A5 are located at the bottom of the pump housing 7; pumps C3, D4 and distributor B6 are located at the top of the pump housing 7; the inlets of all pumps are aligned with the outlets of the distributors and are connected by pipes in the middle.

[0045] The inlet A5-4 of the water distributor A5 is on the same side as the outlet of the radiator A13, the outlet A5-12 of the water distributor A5 is on the same side as the inlet of the radiator A13, the inlet B6-6 of the water distributor B6 is on the same side as the outlet of the radiator B14, and the inlet B6-7 of the water distributor B6 is on the same side as the outlet of the radiator C15.

[0046] As an improvement to the embodiment, such as Figure 5 and Figure 6 As shown, the water distributor A5 is made of steel plate A5-1 and rectangular tube A5-2 welded together to form two closed cavities. The outer side of the rectangular tube A5-2 is provided with a round hole for welding hose joints. The outer side of the water distributor A5 is also welded with a mounting plate A5-3, which is provided with mounting holes for fixing the water distributor A5.

[0047] The water distributor B6 is composed of steel plate B6-1, partition plate 6-2, and rectangular tube B6-3 welded together to form two closed cavities. The outer side of the rectangular tube B6-3 is provided with round holes for welding hose joints. A mounting plate B6-12 is also welded to the outside of the water distributor B6, which is provided with mounting holes for fixing the water distributor B6.

[0048] It should be noted that both water distributors A5 and B6 are equipped with water inlets and outlets. For water distributor A5, water inlet A5-5 is located at the top, and outlets A5-8 and A5-11 are located at the bottom. For water distributor B6, water inlets B6-4 and B6-5 are located at the top, and outlets B6-10 and B6-11 are located on the side. The inlet and outlet connectors in water distributors A5 and B6 can be of different sizes depending on the flow rate. All connectors are fixed to the water distributor by welding to prevent leakage.

[0049] As an improvement to the embodiment, such as Figure 7 As shown, the water pump housing 7 is composed of a front bent plate 7-1, a rear bent plate 7-2, a vertical support plate 7-3, a flat mounting plate 7-4, and a mounting base plate 7-5 welded together.

[0050] The front bending plate 7-1 has through holes for water pipes and water pump wires. The rear bending plate 7-2 has mounting holes for distributors A5 and B6, and holes for the distributor inlets. The bottom surface of the rear bending plate 7-2 has maintenance holes for installing the water pump and pipelines. The front bending plate 7-1 and the rear bending plate 7-2 together form a pentahedron with an open top for housing the water pump. This water pump housing has few components, a small size, and is easy to weld. It provides installation support for the water pump and distributor, while also ensuring a smooth and unobstructed pipeline layout for the water pump and distributor.

[0051] As an improvement to the embodiment, such as Figure 8 As shown, the bottom of the water tank 16 is provided with a water tank inlet 16-1, which is connected to the water inlets of the water distributor A5 and the water distributor B6. The upper part of the water tank 16 is provided with a water tank degassing port 16-2, which is connected to the degassing ports of the radiator A13, the radiator B14 and the radiator C15.

[0052] The multi-pump integrated module of this invention centrally arranges all water pumps and water distributors, with the water inlets of the water distributors aligned with the water inlets of the radiators. All circulating water circuits are uniformly supplied to the heating elements through the multi-pump integrated module. At the same time, the water pumps controlled by a single controller can achieve reasonable flow distribution, solving the heat dissipation problems of existing electric drive loader motors and inverters, while effectively utilizing the internal space of the vehicle frame. This invention provides a cooling system layout structure that solves problems such as difficult pipeline wiring.

[0053] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0054] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cooling system, characterized by, It includes a multi-pump integrated module (8), radiator A (13), radiator B (14), radiator C (15), water supply tank (16), front axle motor (9), rear axle motor (10), generator (11), converter (12), and connecting pipelines; The multi-pump integrated module (8) includes multiple pumps, multiple distributors, and a pump housing (7); the bottom of the pump housing (7) is equipped with pump A (1), pump B (2), and distributor A (5), and the upper part of the pump housing (7) is equipped with pump C (3), pump D (4), and distributor B (6). The inlet of each pump is aligned with the outlet of the distributor, and they are connected by a pipeline; the distributor A (5) The inlet A (5-4) of the water distributor A (5) is on the same side as the outlet of the radiator A (13), the outlet A (5-12) of the water distributor A (5) is on the same side as the inlet of the radiator A (13), the inlet B (6-6) of the water distributor B (6) is on the same side as the outlet of the radiator B (14), and the inlet B (6-7) of the water distributor B (6) is on the same side as the outlet of the radiator C (15). The outlet of the radiator A (13) is connected to the inlet A (5-4) of the distributor A (5), and the inlet of the radiator A (13) is connected to the outlet A (5-12) of the distributor A (5); the inlet of the water pump A (1) is connected to the outlet A (5-6) of the distributor A (5), and the outlet of the water pump A (1) is connected to the inlet of the front axle motor (9), and the outlet of the front axle motor (9) is connected to the inlet of the distributor A (5-12). 5) is connected to the inlet of the second A (5-9); the inlet of the water pump B (2) is connected to the outlet of the second A (5-7) of the water distributor A (5); the outlet of the water pump B (2) is connected to the inlet of the rear axle motor (10); the outlet of the rear axle motor (10) is connected to the inlet of the third A (5-10) of the water distributor A (5); and an electromagnetic water valve (17) is connected between the outlet of the water pump B (2) and the outlet of the water pump A (1). The outlet of the radiator B (14) is connected to the inlet B (6-6) of the distributor B (6), and the inlet of the radiator B (14) is connected to the outlet of the generator (11); the inlet of the water pump C (3) is connected to the outlet B (6-8) of the distributor B (6), and the outlet of the water pump C (3) is connected to the inlet of the generator (11); the outlet of the radiator C (15) is connected to the inlet B (6-7) of the distributor B (6), and the inlet of the radiator C (15) is connected to the outlet of the converter (12); the inlet of the water pump D (4) is connected to the outlet B (6-9) of the distributor B (6), and the outlet of the water pump D (4) is connected to the inlet of the converter (12).

2. The cooling system according to claim 1, characterized in that, The water distributor A (5) is made of steel plate A (5-1) and rectangular tube A (5-2) welded together to form two closed cavities. The outer side of the rectangular tube A (5-2) is provided with a round hole for welding hose joints. The outer side of the water distributor A (5) is also welded with a mounting plate A (5-3) with mounting holes. The water distributor B (6) is made of steel plate B (6-1), partition plate (6-2) and rectangular tube B (6-3) welded together to form two closed cavities. The outer side of the rectangular tube B (6-3) is provided with a round hole for welding hose joints. The outer side of the water distributor B (6) is also welded with a mounting plate B (6-12) with mounting holes.

3. A cooling system according to claim 1, characterized in that, Both the water distributor A (5) and the water distributor B (6) are equipped with a water inlet and a water outlet; The water inlet A (5-5) of the water distributor A (5) is at the top, and the outlet A (5-8) and outlet A (5-11) are at the bottom. The water inlet B (6) has outlet B (6-4) and outlet B (6-5) at the top, and outlet B (6-10) and outlet B (6-11) on the side.

4. A cooling system according to claim 1, characterized in that, The water pump housing (7) is assembled by welding together a front bending plate (7-1), a rear bending plate (7-2), a vertical support plate (7-3), a flat mounting plate (7-4), and a mounting base plate (7-5); the front bending plate (7-1) is provided with through holes for water pipes and water pump wires, the rear bending plate (7-2) is provided with mounting holes for the water distributor and holes for passing through the water inlet of the water distributor, and the rear bending plate (7-2) is provided with maintenance holes.

5. A cooling system according to claim 1, characterized in that, The front axle motor (9) includes a left front axle motor and a right front axle motor, both of which are fixed on the frame. The water inlets of the two motors are located below the motors, and the water circuits of the left front axle motor and the right front axle motor are connected in series. The rear axle motor (10) is the same model as the front axle motor (9) and can swing up and down with the motor mounting bracket; the generator (11) is located in the middle of the vehicle and is driven by the fuel engine to generate AC power. The power is rectified and inverted by the converter (12) to transmit the power to the front axle motor (9) and the rear axle motor (10). The multi-pump integrated module (8) is located in front of the radiator; the water supply tank (16) is located above the multi-pump integrated module (8) and the radiator, and extends beyond the water level chamber of any of the components of the front axle motor (9), the rear axle motor (10), the generator (11) and the converter (12).

6. A cooling system according to claim 1, characterized in that, The bottom of the water tank (16) is provided with a water inlet, which is connected to the water inlet A (5-5) on the water distributor A (5), the water inlet B (6-4) on the water distributor B (6), and the water inlet B (6-5). The upper part of the water tank (16) is provided with a degassing port, which is connected to the degassing ports of radiator A (13), radiator B (14), and radiator C (15).

7. An electrically driven loader, characterized in that, The electric-driven loader is equipped with a cooling system as described in any one of claims 1-6.

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